Copper Trough A lasting, extendable trough, made from finest underground copper - durable enough for up to 25 elephants, today and every day. In this trough lands redundant soluble fibres, making cleaning day a clement day for emotionless routine. If repetition causes a rupture in your copper trough, deliver it home and we can despatch many more, until you beg us to stop! Copper Trough comes with gay stripes in proud rainbow paints.